C1/C2 errors - the difference?

vbimport

#1

whats the difference btwx C1 + C2 errors.

btw has anyone burnt a cd using pcav/cav with no errors at all???


#2

There must not be C2 errors after burning, but it’s impossible to burn without C1 erros.

The best I ever got is this:
http://www-user.tu-chemnitz.de/~noe/LiteOn/C1-scans/#mitsui

This article on writing quality might be interesting:
http://www.cdrinfo.com/Sections/Articles/Specific.asp?ArticleHeadline=Writing%20Quality&Series=0


#3

> whats the difference btwx C1 + C2 errors.

These are the two first layers of error correction
used when you read an audio or data cd (first
C1 correction is performed, then C2). Both
are based on the same algorithm, but are
calculated on different bytes, so that each one
is supposed to correct different types of errors
(burst/random).

> it’s impossible to burn without C1 erros

That doesn’t make sense, C1 and C2 only have
a meaning when reading.


#4

OK, i’ll rephrase:
It’s impossible to burn a cd in a way so that there’re no c1 errors when reading it.


#5

Rephrase again in ‘I have never done it’, what
is possible or not is beyond your only
experiences.


#6

Or maybe no one has ever done it, or ever will


#7

whats a good app to read both types?


#8

For Lite-On drives there’s WSES. (Shhh! don’t tell anyone! It’s a secret :wink: ) It’s floating around here someplace. Do a search. It only works in pure DOS mode, not Windows.

Taiyo Yuden audio burns at 4x or 8x are simply incredible, 32x Z-CLV isn’t much worse, though my CD changer begs to differ and will skip sometimes with discs burned at the high end of the speed spectrum. (LTR-32123S)


#9

Originally posted by spath
Rephrase again in ‘I have never done it’, what
is possible or not is beyond your only
experiences.

Didn’t you say yourself that due to inconsistencies in the media, humidity, the secret signals being sent into your head by the CD companies (Okay, I made that last one up :wink: ), that there will never be a CD read without a C1 error, and that they are a natural artifact of reading?


#10

As you can see in my scans, an old Mitsui is even better than Taiyo Yuden.